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How to Do Gesture Recognition With Kinect Using Hidden Markov Models (HMMs)

Microsoft’s Kinect sensor is the first large-scale, commercial release of a depth camera device—a camera that can see in 3D. Though depth cameras are not exclusive to Microsoft (and, in fact, [url="http://www.creativedistraction.com/news/the-future-of-openni-primesense-kinect/"]the Kinect’s hardware design is licensed from the Israeli company, PrimeSense[/url]), Microsoft’s novel use of the device as a game controller is driven by the company’s own software for analyzing its 3D data, including proprietary algorithms for feature selection, scene analysis, motion tracking, skeletal tracking and gesture recognition. Now, suppose we want to do this kind of analysis ourselves. Where do we even begin?

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